Join Aleks Krotoski, Jemjma Kiss and Charles Arthur for a start-up special on Tech Weekly this week. Simon Carmichael, head of private placements and venture sellsides and director at Torch Partners, takes your questions, whether you're looking for angel, first-round or later investment. But rather than just taking his word for it, we're also speaking with Sam Barnett from struq.com, who self-funded through the lean years of 2008-10, establishing a successful behavioural retargetting advertising company. He offers his advice and a word on how to avoid the pitfalls of digital hubris.

The team also get to grips with Angelgate, the business story rocking Silicon Valley. Internet entrepreneur Jason Calacanis weighs in during an interview with Jemima, and throws a few well-placed barbs at his old business partner, Michael Arrington of TechCrunch.

We'll find out why the mobile industry is suing itself, and what BT has that the other fibre-optic broadband providers want.